Requirement #722 


For variable: Air specific humidity (near surface)

In application: Aeronautical Meteorology

Goal Breakthrough Threshold
Uncertainty 1 % 2 % 5 %
Stability/decade (if applicable)
Horizontal Resolution
Vertical Resolution
Observing Cycle 30 min 60 min 2 h
Timeliness 5 min 10 min 30 min


Validated: 3/27/14 Source: J van der Meulen
Comment: At the aerodrome; to derive relative humidity and dewpoint temperature (using air temperature [at surface]); not typically measured at 2 m height. Confidence: firm
Def: :Result of impact studies of actual data used in actual applications of numerical or conceptual models